Photoreactor
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. KINETIC MODELING AND EXPERIMENTAL VALIDATION OF A PHOTOCATALYTIC FLUIDIZED BED REACTOR FOR n-HEXANE DEGRADATION
Abstract This work presents a modeling procedure for a tall photocatalytic fluidized bed photoreactor used for the photocatalytic oxidation of n-hexane on the anatase TiO2 surface. The modeling strategy split the reactor into two parts: a lower dense phase, with high solids concentration behaving as a bubbling bed treated as a continuous stirred tank reactor
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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2. ASSEMBLY OF LOW-COST LAB-MADE PHOTOREACTOR FOR PREPARATION OF NANOMATERIALS
In this paper, a low-cost and versatile lab-made photoreactor was constructed for the preparation of nanomaterials such as gold nanoparticles and reduced graphene oxide. The power of the lab-made photoreactor can be easily adjusted according to the number of lamps turned on. Moreover, the lab-made photoreactor allows the utilization of different sources of i
Quím. Nova. Publicado em: 2018-01
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3. Prà e PÃs-Tratamento por Eletro-OxidaÃÃo Associada à FotocatÃlise HeterogÃnea em uma ETA por FiltraÃÃo Direta Visando a ReduÃÃo dos Precursores dos Compostos Organoclorados / Pre and Post-Treatment by Electro-Oxidation Associated with Heterogeneous Photocatalysis on an ETA for direct filtration Aiming to Reduce Precursors of Organochlorine Compounds
This study evaluated the performance of the heterogeneous photocatalysis combined with electrooxidation compounding a hybrid photoreactor (contact time: 2.75; 5.5 and 11 min.) to pre-treat eutrophic water, comparing the use of chlorine (5 and 10 mg.L-1) and chlorine dioxide (1.2 mg.L-1), subjected to descending direct filtration (aluminum hydroxychloride at
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/10/2012
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4. Development of a flow through photo-reactor to study degradation of organic compounds by Sequential Injection Analysis (SIA)
Este trabalho descreve um foto-reator para a execução "in line" da degradação de compostos orgânicos através da reação de foto-Fenton, utilizando-se de um sistema de Análise por Injeção Sequencial (SIA). Uma solução do corante do sal tetrassódico de ácido 3,4',4²,4
Journal of the Brazilian Chemical Society. Publicado em: 2009
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5. Tratamento de efluentes provenientes de curtumes utilizando os processos eletroquímico e fotoeletroquímico / Treatment of tannery wastewaters using electrochemical and photoelectrochemical process
In this work the degradation of tannery wastewaters using electrochemical, photocatalytic and photoelectrochemical processes was studied. Wastewaters collected in an industry and solutions prepared in the laboratory, which simulated real wastewaters, were used in these studies. Effects of the anodic material, current density, presence of sulfate and chloride
Publicado em: 2009
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6. CONCEPÇÃO, CONSTRUÇÃO E AVALIAÇÃO DE FOTORREATORES CATALISADOS NA DEGRADAÇÃO DE CARGA POLUENTE E AMOXICILINA EM EFLUENTE HOSPITALAR
The focus of this study was the application of advanced oxidation photoprocesses, heterogeneous photocatalysis and photo-Fenton, in the degradation of pollutant load and amoxicillin in wastewater from the University Hospital of Santa Maria (HUSM), evaluating the photoreactors performance in the degradation efficiency. In the hospital wastewater there is a wi
Publicado em: 2008
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7. Degradação do pesticida Padron® por processos fotoquímicos utilizando luz artificial e solar
Destruction of Padron® (dye and picloram) was evaluated using a photoreactor and a solar reactor. Photolysis was observed using only a germicide lamp (GL). Black light (BL) and H2O2 (172 mmol L-1) promoted a conversion of 49% and 6% of dye and picloram, respectively. Photocatalytic processes were more efficient using TiO2/GL (96%-dye; 60%-picloram) than TiO
Química Nova. Publicado em: 2007
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8. DesinfecÃÃo de Ãgua contaminada com Escherichia Coli: desenvolvimento de fotorreator e estudo cinÃtico
A Ãgua tem influÃncia direta sobre a saÃde, a qualidade de vida e o desenvolvimento do ser humano. A maioria das enfermidades (80%) que ocorrem em paÃses em desenvolvimento à ocasionada por contaminaÃÃo microbiana da Ãgua. Em conseqÃÃncia, a desinfecÃÃo de Ãgua de consumo e residuÃria à necessÃria. O uso da RadiaÃÃo UV-C ( = 253,70 nm) como
Publicado em: 2007
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9. Degradation of the Herbicida Atrazina saw Processes Advanced of Oxidation / DegradaÃÃo do Herbicida Atrazina via Processos AvanÃados de OxidaÃÃo
Herbicide contamination of the aquatic environment is widespread, particularly that caused by the triazine group herbicide Atrazine, which is used for weed-control in sugar-cane crops in the State of Pernambuco in Brazil. Atrazine is a âpriority pollutantâ since it is carcinogenic and is highly resistant to biological breakdown, with a 12 months half-life
Publicado em: 2004
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10. AvaliaÃÃo CinÃtica da Taxa de ReaÃÃo de DegradaÃÃo do Ãcido DicloroacÃtico via tecnologia de oxidaÃÃo avanÃada OzÃnio/UV: um estudo cinÃtico
With the current level of industrial activity the quantity of pollutants being rejected into the aquatic environment are constantly increasing. The removal of these products through conventional processes such adsorption, filtration, incineration or biological treatment is not always efficacious, since these methods are based on the simple transference of th
Publicado em: 2003